I'm not there, so please bear with me. What I believe you are looking at is the hose for the PCV valve. It should run between the valve cover and air box.
The PCV valve is mounted in the valve cover under the intake manifold. See Picture 1 and 2)
The other end of that hose should go to the air box. If you look at picture 4, it shows the air box. The hose between numbers 4 and 5 is where that end goes. Picture 5 shows the hose and how it is run from the PCV valve on the valve cover to the air box (number 6 in the picture)
I have attached a few pics of the PCV valve. Let me know if that looks like what you are dealing with.
Images (Click to enlarge)
Sunday, April 28th, 2019 AT 5:39 PM